10 20 30 40 50 UACAGUGGUGUGGCCCGU--| GU UC C C A UGAUGA ACUG CCGU UAAGUACUAG GC GCAGG GUG \ UGAC GGCA AUUCAUGGUU UG CGUCC CAC U UACAACAUUCUACUCUAUGC^ AG CA C A C UUAUUC . 110 100 90 80 70